Jun 02, 2017 03:23 PM EDT
Recently, NASA astronomers have discovered the evidence of supermassive black holes about a billion years after the big bang. NASA's Chandra X-ray Observatory and the Sloan Digital Sky Survey (SDSS) suggest an answer to the question on the appearance and growing of supermassive black holes in the early universe.
The earliest supermassive black holes in the Universe may have grown in intensive and sporadic bursts. It can contain millions to billions of times the mass of Earth's sun. According to scientists, supermassive black holes grew rapidly in the first billion years after the Big Bang, Phys.Org reported.
Lead author Edwige Pezzulli from the University of Rome said, supermassive black holes are not born in such a way, they need to consume a vast amount of material and that takes time, NASA reported. They are still trying hard to figure out the signs of these growing giant black holes.
However, when a material is falling towards a supermassive black hole then it becomes heated and produces large amounts of electromagnetic radiation. After the deep space survey with NASA's Chandra X-ray observation, scientist found only a few numbers of black holes and these supermassive black holes have proved to be elusive.
Moreover, researchers examined the different theoretical model and tested them against optical data from the SDSS and X-ray data from Chandra. After testing multiple models, they made a conclusion that the black hole growth could exceed the so-called Eddington limit, where the outward pressure of radiation from the hot gas balances the inward pull of the gravity of the black hole. Their finding also indicates it exists for a very short period and this growth may be difficult to spot.
Basically, this is study is based on the idea about when black holes were born. Co- author Maria Orofino said, "These "light" black holes seeds could be the remnants of the first generation of massive stars formed only a few hundred million years after the Big Bang".
A group of female astronomers studied the X-ray data and others optical data from theoretical models. They said herky-jerky growth may be the key to understanding the origins of these black giant black holes. According to them, they are still trying to improve the test with NASA's Chandra X-ray Observatory and they will also need to look at larger swaths of the sky in X-rays.
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